Plants and animals that rely on diffusion to move molecules through their bodies tend to ________
a. be large
b. have respiratory and vascular systems
c. be small and flat
d. evolve few adaptations because diffusion is a passive process
c
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Which of the following is the cancer of epithelial cells?
A. sarcoma B. lymphoma C. leukemia D. carcinoma E. myoloma
Phytoestrogens in plants ____
a. increase the production of megaspores b. function in the production of eggs c. increase the speed at which pollen tubes reach the egg d. aid in the nuclear fusion of egg and sperm e. have nothing to do with plant reproduction
Which of the following organelles would form a membrane-bound package, also known as a vesicle?
A) chloroplasts B) ribosomes C) Golgi apparatus D) mitochondria E) lysosomes
A membrane protein that is embedded in the plasma membrane is called
a) integral b) peripheral c) stationary d) allosteric